期刊
REVIEW OF SCIENTIFIC INSTRUMENTS
卷 85, 期 10, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4897489
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-
资金
- Research Council of Norway within the THERMEL project [143386]
An apparatus for measuring the Seebeck coefficient and electrical conductivity is presented and characterized. The device can be used in a wide temperature range from room temperature to 1050 degrees C and in all common atmospheres, including oxidizing, reducing, humid, and inert. The apparatus is suitable for samples with different geometries (disk-, bar-shaped), allowing a complete thermoelectric characterization (including thermal conductivity) on a single sample. The Seebeck coefficient a can be measured in both sample directions (in-plane and cross-plane) simultaneously. Electrical conductivity is measured via the van der Pauw method. Perovskite-type CaMnO3 and the misfit cobalt oxide (Ca2CoO3)(q)(CoO2) are studied to demonstrate the temperature range and to investigate the variation of the electrical properties as a function of the measurement atmosphere. (C) 2014 AIP Publishing LLC.
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